Continuous concentration and sewage discharge device and method for shrimp farming system

Abstract

The invention discloses a continuous concentration and sewage discharge device and method for a shrimp farming system. The continuous concentration and sewage discharge device is characterized by comprising a sewage collecting pipe, an air lift pipe, a sewage storage bin and a sewage discharge pipe, wherein the opening end of the sewage collecting pipe is located in the center of the bottom of a culture pond, the other end of the sewage collecting pipe communicates with the air lift pipe, and the air lift pipe communicates with the sewage storage bin through a sewage suction pipe; the sewage storage bin is defined by a bottom plate arranged obliquely downwards, side baffles symmetrically arranged on two sides of the bottom plate, a detachable coarse filter screen and a detachable fine filter screen, the coarse filter screen is horizontally arranged between the two side baffles, the fine filter screen is obliquely or vertically arranged between the two side baffles, and the two ends of the coarse filter screen are connected with the sewage suction pipe and the fine filter screen respectively; and the bottom of the fine filter screen is connected with the bottom plate, the top of the bottom plate is connected with the bottom of the sewage suction pipe, the lowest position of the bottom plate communicates with the sewage discharge pipe in a butt joint mode, and a positive baffle is vertically arranged at the joint of the coarse filter screen and the fine filter screen. The continuous concentration and sewage discharge device has the advantages that shrimp shells, dead shrimps, and sick shrimps with poor vitality can be separated in time, residual bait and feces are concentrated and then discharges, and the water consumption is low for sewage discharge.

Description

technical field [0001] The invention belongs to the technical field of aquaculture, and in particular relates to a continuous concentrated sewage discharge device and method for a shrimp farming system. Background technique [0002] At present, there are several modes of shrimp culture in my country, such as pond culture, high-level pond culture, and factory culture. In order to maintain a good water quality environment in the culture system, it is necessary to remove residual bait, feces, shrimp shells, dead shrimp and disease with poor vitality in a timely manner. Shrimp and other dirt are discharged from the breeding system in time. The basic form of the prawn farming sewage system is to use a pot bottom or a conical bottom to collect all kinds of sewage near the central sewage outlet at the bottom through the rotation of the water flow, and then discharge the sewage out of the cultivation system through the sewage pipe under the action of the water pressure difference . ...

AI Technical Summary

Problems solved by technology

The devices proposed by these two inventions can collect shrimp shells, dead shrimp, and diseased shrimp with poor vigor to prevent overflow and escape of shrimp, but the overall structure of the sewage collector is relatively complicated, and residual bait and feces need to be connected to subsequent separation The device is further separated and processed, and can only be used in a circulating aquaculture system. A series of auxiliary equipment such as water pumps are needed in the follow-up, and the input cost and energy consumption are high, which is difficult for ordinary farmers to bear.

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